<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8" />
  <meta http-equiv="X-UA-Compatible" content="IE=edge" />
  <meta name="viewport" content="width=device-width, initial-scale=1.0" />
  <title>Document</title>
  <link rel="stylesheet" href="style.css" />
</head>

<body>
  <!-- 购物车案例 -->
  <div id="app">
    <div v-if="books.length">
      <table>
        <thead>
          <tr>
            <th></th>
            <th>书籍名称</th>
            <th>出版日期</th>
            <th>价格</th>
            <th>购买数量</th>
            <th>操作</th>
          </tr>
        </thead>
        <tbody>
          <tr v-for="(item, index) in books">
            <td>{{item.id}}</td>
            <td>{{item.name}}</td>
            <td>{{item.date}}</td>
            <!-- 这里使用的vue中的过滤器用法 -->
            <td>{{item.price | showPrice}}</td>
            <td>
              <!-- v-bind:disabled="item.count <= 1"表示数量小于1的时候点击按钮失效 -->
              <button @click="decrement(index)" v-bind:disabled="item.count <= 1">
                -
              </button>
              {{item.count}}
              <button @click="increment(index)">+</button>
            </td>
            <td><button @click="removeHandle(index)">移除</button></td>
          </tr>
        </tbody>
      </table>
      <h2>总价格: {{totalPrice | showPrice}}</h2>
    </div>
    <h2 v-else>购物车为空</h2>
  </div>

  <script src="vue.js"></script>
  <script src="main.js"></script>
</body>

</html>